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參數資料
| 型號： | L8576B |
| 英文描述： | Dual Ringing SLIC |
| 中文描述： | 雙振鈴用戶接口 |
| 文件頁數： | 4/26頁 |
| 文件大小： | 583K |
| 代理商： | L8576B |
4
Agere Systems Inc.
Data Sheet
May 2001
L8576B Dual Ringing SLIC
Description
(continued)
5-8414a (F)
* R
DCT
and R
DCR
(optional) are only required to keep the NSTAT output at a steady state during the disconnect state.
Notes:
T
X
= –2 dB.
R
X
= –4 dB.
Termination = 600
.
Hybrid balance = 600
.
Ring trip optimized for 20 Hz.
Figure 2. Typical 600
Application Circuit (Only One Channel Shown)
7
6
5
R
PT1a
L7591
TIP
RING
FGND
V
BAT
1
2
3
4
8
CH 0
PTa
36
PRa
35
X1
R
27.4 k
R
T1a
VFXIN1
VFRO1
RXa
154 k
–
+
GSX1
+2.4 V
DX
11
DR
12
FSX1
13
FSR1
14
MCLK
9
V
DD
DX
MCLK
FS0
6
1/2 T8503
CODEC
R
40.2 k
R
309 k
GNDA1
DGND
TO DTMF
RECEIVER
20
17
19
18
10
–X1
AGNDa
BGNDa
C
VBATa
0.1
100 V
R
27.4 k
C
0.056
F
50 V
C
RTa
0.1
μ
F
50 V
V
BAT
–
+
–
+
–
+
–
+
RECTIFIER
R
52.3 k
R
383 k
R
TTHa
R
TFLTa
V
CCa
75
μ
A
(130
A
RINGING)
NSTATa
R
51.1 k
I
PROGa
DC
OUTa
V
CC
LCTHa
A = 6
CONDac
1/2 L8576
SLIC
GAIN = 125 V/A
C
, 0.22
μ
F, 100 V
10% POLYESTER
V
CC
24
C
VCC
0.1
F
10 V
R
B
TG1
TG2
R
16.9 k
R
7.5 k
R
10 k
C
470 pF
10 V
CBa
0.33
μ
F
10 V
R
28.7 k
R
CVPa
R
CVNa
V
ITRa
R
2.2 k
5%,
2 W
AX
25
42
31
30
28
29
44
43
1
41
40
37
32
33
34
27
26
23
R
RNG
39
V
CC
V
DD
V
BAT
BGND
DGND
AGND
FGND
+5 V
–65 V
GND
DR
41.2 k
NSTATa
R
PR1a
N
38
C
, 0.22
μ
F, 100 V
10% POLYESTER
V
BAT
R
300 k
V
BAT
R
300 k
R
143 k
C
C1A
0.1
μ
F
10 V
C
33 nF
10 V
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